There’s a huuuuuge amount of characters to choose from (besides the Fates characters with existing costumes) but off the top of my head:
- Delthea - tiny vampire who’ll tiny fang you
- Tharja - witch (she could wear a paper bag and that gacha cash would still roll in :D)
- Peri - punk lolita! maybe mixed with a candy theme too
- Niles - cat-burglar boy
- Eliwood - pumpkin headgear, when you look through the carvings you’ll see the thousand yard stare of death